Hobby King KK2.1 Multirotor Flight Controller: Featues LCD, 6050MPU, and Atmel 644PA
- Thread starter Mustang7302
- Start date
rcboatmaniac
Junior Member
I would really love to get this quadcopter going but I am having some serious issues. I orderd 2 KK2.1 boards and I received them today so I went through the process of installing one of them in my rotor bones kits. I went through and made sure I have everything hooked up properly, so I then went and turned on my radio and then plugged in the battery pack (Turnigy 2.2 S3 11.1v) as soon as I plugged it in the led display light up and the voltage sensor started a continuous chirp and the screen went blank and a little bit of smoke came off the board where the number one motor plugs in. So now the board does nothing when you hook the battery back up. I have a spare board but I ain't in no hurry to burn it up like the last on did. I also have two of the KK2.0 boards and they both did the same thing, I tried to go through HobbyKing and get them replaced, but I wasn't interested in going through all the hassle they wanted me to go through to try and replace them. So I went and just ordered two new boards.
So if any body has and suggestion or advice that may be of some help I'd appreciate. I would really like to try and get this thing off the ground.
Thanks Dave
So if any body has and suggestion or advice that may be of some help I'd appreciate. I would really like to try and get this thing off the ground.
Thanks Dave
Scratch
New member
I ordered my KK 2.1 from HK on December 15th. I'm not sure which warehouse I ordered it from but IIRC, it was the international warehouse. On the 22nd, HK sent me an email that it had left the warehouse. I wish it would get here since it also has my battery charger with it.
I can't wait till it gets here!
I can't wait till it gets here!
US Warehouse has KK2.1's NOW! O yea and Kapteinkuk has finally posted in the RC Groups thread here
http://www.rcgroups.com/forums/showthread.php?t=1675613&page=1455
Interesting Read!
Post # 21822
Thurmond
http://www.rcgroups.com/forums/showthread.php?t=1675613&page=1455
Interesting Read!
Post # 21822
Thurmond
Cyberdactyl
Misfit Multirotor Monkey
Wow, for the very inexpensive, but extremely functional flight control board fans, such as me, this is quite a culture and techno bomb.
Well I now know to be VERY careful with the stock KK2.1 1.5 firmware and to be extremely careful, with the connections of the buzzer and battery level wiring!
I'm just happy I have two oldies along with my 2.1.
Oh my. . .
If you've had 3 boards let go the magic smoke, I'd double check all your polarities. Sounds like you've got something reversed somewhere. Or you have something feeding 12V into the board besides the monitoring port.
rcboatmaniac
Junior Member
I double checked all of my polarities and everything is correctly connected, I even went as far as changing out the ESC to the number one motor since it seems to be the one that supplies power to the KK2 board. I did hook up my last board, but this time I only used a 7.4v lipo, and I had no problems with it, but I am still a little afraid to hook a 11.1v lipo to it. I am not ready to fry another board if you know what I mean.
You shouldn't be hooking a lipo directly to it at all. Power needs to come in from the ESC or another 5V source like a BEC. On the KK2, motor port 1 and all of the receiver side ports(left side of the KK2) are inter-connected on the power to form a single buss. You can use 5V on any of those ports to power both the KK2 and your receiver, as long as you have at least one normal lead from the board to the Rx. I use one of these for 3 of my channels on just the signal pins and one in the normal orientation to power my Rx.
Like this:
Like this:
Xuzme, I think he wants to monitor the battery with the KK2...
I agree with your earlier statement and suggest either the polarity is reversed, or the lipo is being connected to the piezo alarm pins right next to the battery alarm pins on the 2.1 board.
I agree with your earlier statement and suggest either the polarity is reversed, or the lipo is being connected to the piezo alarm pins right next to the battery alarm pins on the 2.1 board.
Hi
I have a KK2.1 flashed to 1.6 but only see zero voltage on the SAFE page. I have attached the buzzer and the FC is all hooked up and works in my Y-3 Tricopter. Do I have to do anything else to display the voltage, I know on the KK2.0 FC you had to solder pins but I understood that nothing was needed on the KK2.1 or do you have to attach an LEd to the second pair of pins?
Thanks
I have a KK2.1 flashed to 1.6 but only see zero voltage on the SAFE page. I have attached the buzzer and the FC is all hooked up and works in my Y-3 Tricopter. Do I have to do anything else to display the voltage, I know on the KK2.0 FC you had to solder pins but I understood that nothing was needed on the KK2.1 or do you have to attach an LEd to the second pair of pins?
Thanks
Cyberdactyl
Misfit Multirotor Monkey
Hi Tarqui- You still have to connect your battery voltage to the voltage reader pins (the double pins in the LOWER left).
That's what kapteinkuk is warning about in his post;
"- Messed up the voltage sensor input and buzzer output.
Connecting the intended battery sense wire (any orientation) to the buzzer output will provide full battery voltage to: the RX, the ATMEGA chip, ESC at output #1 and Q1. Expect the magic smoke! "
Be very careful doing so and double, triple check your connections! The real damage will come when someone disconnects the leads for some reason in the field, etc. and is not paying attention, is in a rush, and cross plugs them back.
That's what kapteinkuk is warning about in his post;
"- Messed up the voltage sensor input and buzzer output.
Connecting the intended battery sense wire (any orientation) to the buzzer output will provide full battery voltage to: the RX, the ATMEGA chip, ESC at output #1 and Q1. Expect the magic smoke! "
Be very careful doing so and double, triple check your connections! The real damage will come when someone disconnects the leads for some reason in the field, etc. and is not paying attention, is in a rush, and cross plugs them back.
rcboatmaniac
Junior Member
That is exactly how I have everything hooked to the board, I have a quad lead power cord for all my ESC's to power them up from a single battery pack!! I am in no way supplying power to the KK2 board directly from a battery pack it is coming from the ESC's!!! I am having a sneaky feeling that one or more of my ESC's has a bad BEC circuit in them and is back feeding the 11.1v to the KK2 board. The only battery pack I have powered the board up with is a 4.8v receiver pack and it was hooked to the AUX post on the receiver side of the board that way I could go into the menu and program it for the quad-copter configuration I was setting it up for, and that my friend was the only battery attached to the board.
Dave
Thanks for the quick reply Cyberdactyl
I may just go with a separate low battery alarm but I now understand what Kapteinkuk meant, pity the manual does not make this more obvious. By the way had my maiden flight of the Y-3 Tricopter today and it really handles well particularly the self-leveling in the wind.
I may just go with a separate low battery alarm but I now understand what Kapteinkuk meant, pity the manual does not make this more obvious. By the way had my maiden flight of the Y-3 Tricopter today and it really handles well particularly the self-leveling in the wind.
You can grab a voltmeter and (with props off!) power up the distribution harness and see what voltage your ESC's are putting out. That is the only thing I can think of besides a reversed polarity coming off the ESC. Check that positive is indeed positive on them as well. If someone was sleepy or not paying attention, it wouldn't be hard to solder those on backwards.
rcboatmaniac
Junior Member
Well problem solved so far as I suspected I had a bad ESC with a non functioning BEC circuit it was feeding the full 11.1v to the KK2 board. Now I just need to get a new ESC and I should be able to make some test flights. Cross my fingers!!!
Sad part it doesn't replace the 3 bad KK2 boards I have.
Oh well learn some and lose some.
Dave
Sad part it doesn't replace the 3 bad KK2 boards I have.
Oh well learn some and lose some.
Dave
Last edited:
Cyberdactyl
Misfit Multirotor Monkey
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